Abstract

Hydrocyclones use centrifugal fields to promote the separation of a disperse phase from a continuous phase. Hydrocyclones have advantages in comparison with others separation devices due to their low cost of manufacturing, installation, maintenance, and simple operation. The purpose of this work was to develop a hydrocyclone for water treatment of refinery streams with an oil mass fraction of 1%. CFD simulations of hydrocyclones were carried out using a rotatable central composite design with response surface methodology to determine the values of overflow and underflow diameters that would produce a high separation efficiency and low split ratio. The results show that the best values are 10 mm for overflow and 15 mm for underflow, resulting in a split ratio of 13.1 and an oil separation efficiency of 72% for a 25 μm oil drop size.

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